Vaccines need a supply chain

The long-awaited immunization vaccines for SARS-CoV2 have arrived, and for us all to get back to “normal” again, rapid application and sustained large-scale production are required. On them depends to a large extent to achieve recovery and reduce the economic and human impact that Covid-19 is causing. Generally, vaccines work by exposing to the immune system a virus or part of it, which has been previously weakened or attenuated. When the vaccinated immune system subsequently encounters...
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